|häləp|n(y)üstik, |hōl- adjective
Etymology: International Scientific Vocabulary hol- + -pneustic (from Greek pneustikos of or for breathing, from — assumed — Greek pneustos — verbal of Greek pnein to breathe — + Greek -ikos -ic) — more at sneeze
: having all the spiracles or tracheal stigmata open — distinguished from apneustic ; used of various insects